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    <meta charset="UTF-8">
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    <title>Document</title>
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    <script>
 //100-999  个位 百位 十位 相同的
 
    var res =0;
for(var num = 100; num<=999; num++ ){
    if(num%111==0){
        res += num
    }

}
  alert(res)

    </script>
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